There is some truth to standard of living contributing towards your workmanship. You're going to be more of a perfectionist if your name is Wolfgang, drive a new BMW/Audi car to work, live in decent accommodation. Fiercely proud that the manufacturer of the automobile you're signing off on, comes from your home nation.
You do know that most of the nationalities that make up the workforce in Wolfsburg aren't even German? Most are from Turkey and Hungary. I think the last demographic I saw was something around 10% are actually German decent.
As for the pride in one's job and proud of the vehicle you are manufacturing, I'm not sure what nationality has to do with that. I'm sure the workforce in the Pueblo plant are just as full off pride in their work as the Wolfsburg workers.
Wow the racism that goes on in this place is ridiculous. Just come out and say it. You don't want a Mexican making your car because some how you think they are substandard.
I work with a lot of Mexicans from around the Yucatan area and they are some of the most meticulous and steadfast workers in this place. They find things wrong that were missed by many many gringoes. I love working with them and they are great people too.
Get off the racism in the end it's just a car, and a glorified marginally fast economy car at that, being made in Germany doesn't make it any better for worth anymore.